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Finding the Fourth Proportional to 40,305.16, 55,621.02 and 22,155.76

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Solution

The fourth proportional to 40,305.16, 55,621.02 and 22,155.76 is: 30,574.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,305.16 : 55,621.02 = 22,155.76 : x
  2. Step 2: Convert to fraction form
    40,305.16/55,621.02 = 22,155.76/x
  3. Step 3: Cross multiply
    40,305.16x = 55,621.02 × 22,155.76
  4. Step 4: Simplify right side
    40,305.16x = 1,232,325,970.08
  5. Step 5: Solve for x
    x = 1,232,325,970.08/40,305.16
  6. Step 6: Final answer
    x = 30,574.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.